利用信息素防治水稻二化螟的效果研究

Control Effect of Pheromone against Rice Stem Borer

[目的]寻求安全、环保的水稻二化螟防治新技术。[方法]研究了信息素对水稻二化螟的防治效果。[结果]信息素25个诱捕点100 d共诱蛾1 727头(其中越冬代1 128头,一代599头),越冬代蛾交配率为21.66%,一代蛾交配率为50.92%;试验区二化螟一代防效为41.60%,二代防效为86.70%;农民自防对照区二化螟一代防效为82.00%,二代防效为81.60%。试验区比农民自防区减少3次化学农药的使用,一季水稻可节本省工费用201元/hm2。[结论]信息素诱蛾能力强,可望用于水稻二化螟的防治。

[ Objective ] The aim was to find a safe and environmental technology to control rice stem borer. [ Method] Control effect of phero- mone against rice stem borer was studied. [ Result] The 25 trapping points of pheromone totally trapped 1 727 rice stem borer within 100 days, among them the overwintering generation moth and first generation moth of rice stem borer were 1 128 and 599, respectively; mating rates of the overwintering generation moth and first generation moth were 21.66% and 50.92%, respectively. Control effieiencies of the first and second generation moth of rice stem borer were 41.60% and 86.70% in tested area, and were 82.00% and 81.60% in control area, re- spectively. The tested area had three times of applying pesticide less than control area, so one season rice could save 201 yuan/hm2. [ Con- clusion] Pheromone has strong trapping effect, so it can be applied in controlling rice stem borer.